Developer credits
Git commits in Moodle 3.6.7 by Tobias Reischmann
commit 8fd70353e68a09272f17e4a7e7177610fea0c868 Author: Tobias Reischmann <tobias.reischmann@wi.uni-muenster.de> Date: Wed, 28 Aug 2019 21:12:40 +0800 Tag: v3.6.7 MDL-66543 forms: Make (hard) frozen textareas readonly (or disabled)